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The patent EP3822524 was granted to GOK Regler UND Armaturen Gesellschaft & Cokg on Jul 2, 2025. The application was filed on Nov 15, 2019 under application number EP19209432A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| TRUMA GERATETECHNIK | Jan 23, 2023 | PRINZ & PARTNER MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US3995710 |
| OPPOSITION | EP1473494 |
| OPPOSITION | EP2096340 |
| OPPOSITION | US2255965 |
| OPPOSITION | US2910080 |
| OPPOSITION | US4191868 |
| SEARCH | DE1030261 |
| SEARCH | FR1187122 |
| SEARCH | JPS60208675 |
| SEARCH | US2014216569 |
| SEARCH | US2853089 |
| SEARCH | US3109441 |
| SEARCH | US4191868 |
| SEARCH | US4314120 |
| SEARCH | US4593711 |
| SEARCH | WO03095965 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
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Jun 5, 2025
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Refund of fees
Appeal
Feb 17, 2025
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(Electronic) Receipt
Appeal
Feb 4, 2025
Feb 4, 2025
Withdrawal of an appeal
Appeal
Jan 20, 2025
Jan 14, 2025
(Electronic) Receipt
Appeal
Jan 14, 2025
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Notice of appeal
Appeal
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OPPO
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Decision to grant a European patent
Search/Exam
Apr 7, 2022
(Electronic) Receipt
Search/Exam
Apr 7, 2022
English translation of the claims
Search/Exam
Apr 7, 2022
Filing of the translations of the claims
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Apr 7, 2022
French translation of claims
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Apr 7, 2022
Letter accompanying subsequently filed items
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Mar 1, 2022
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Intention to grant (signatures)
Search/Exam
Mar 1, 2022
Text intended for grant (clean copy)
Search/Exam
Mar 1, 2022
Jan 25, 2022
Examination started
Search/Exam
May 25, 2021
Apr 21, 2021
Notification of forthcoming publication
Search/Exam
Oct 26, 2020
(Electronic) Receipt
Search/Exam
Oct 26, 2020
Oct 26, 2020
Amended claims with annotations
Search/Exam
Oct 26, 2020
Oct 26, 2020
Amended description with annotations
Search/Exam
Oct 26, 2020
Amendments received before examination
Search/Exam
Oct 26, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 30, 2020
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European search opinion
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Apr 30, 2020
European search report
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Apr 30, 2020
Information on Search Strategy
Search/Exam
Apr 16, 2020
Search started
Search/Exam
Feb 5, 2020
Communication to designated inventor
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Feb 5, 2020
Communication to designated inventor
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Nov 15, 2019
Abstract
Search/Exam
Nov 15, 2019
Nov 15, 2019
Claims
Search/Exam
Nov 15, 2019
Description
Search/Exam
Nov 15, 2019
Designation of inventor
Search/Exam
Nov 15, 2019
Drawings
Search/Exam
Nov 15, 2019
Request for grant of a European patent
Search/Exam